Dyestuff intermediate



Patented Mar. 12, 1940 DYESTUFF INTERMEDIATE Arthur Ernest Everest and-.rJames Ar thur Wallwork, Huddersfield. England. assignorsto John. W. Leitch & Company Lithitedllirddersfild, England, a British company No Drawing. Application June-9,, 1937.1Scrial-No- 147,260. In Great Britain June 16, 1936 2 Claims This invention relates to the production of preparations containing arylamides of fi-hydroXy-.

naphthoic acid or aceto-acetic arylides.

In the art of applying the insoluble azoic 5 colours to textile fibres, use is made of the arylamides of c-hydroxynaphthoic acid and acetoacetic arylides. The aforesaid arylamides or arylides are insoluble in water and it is first necessary to treat them with an alkaline solution such as a caustic soda solution and usually with the further addition of a salt of a sulphonated fatty acid such as Turkey red oil in order to render the product water soluble.

15 water soluble powder containing an arylamide of B-hydroxynaphthoic acid or an aceto-acetic arylide which has the advantage that the user is saved much trouble in preparing a solution of the arylamide or arylide.

According to the present invention a water soluble powder is provided comprising one or more arylamides of fi-hydroxynaphthoic acid or one or more ace'to-acetic arylides, one or more powdered or finely crystalline alkaline-reacting 25 salts stable on storage and sufficiently alkaline to dissolve the aforesaid arylamide or arylamides or the aforesaid arylide or arylides and one or more wetting or dispersing agents capable of being prepared in powder form.

30 Suitable arylamides of S-hydroxynaphthoic acid are the products known under the trade names Brenthol A. S. (c-hydroxy naphthoic acid anilide) Brenthol O. T. (o-toluidide of p-hydroxy naphthoic acid), Brenthol M. N. (c-hydroxy 35 naphthoic acid-m-nitroanilide), Brenthol C. T.

(5.chloro-otoluidide of c-hydroxy naphthoic acid) and Brenthol A. N. (5hydroxy-naphthoic acid-a-naphthalide) (the word Brenthol being a registered trade mark).

Suitable aceto-acetic arylides are the products known under the trade names Naphthol A. S. G. or Brenthol A. T. (diaceto-acetic toluidide).

Brenthol O. T. is equivalent in composition to Naphthol A. S. D. whilst Brenthol A. T. is equiva- 45 lent to Naphthol A. S. G. and Brenthol C. T.

is equivalent to Naphthol A. S. T. R.

Suitable alkaline reacting salts are sodium metasilicate, soda ash, and tri-sodium phosphate. Aminated fatty substances such as the product 50' known under the trade name Igepon T. powder, soaps, sulphonated fatty acids, fatty oils and fatty alcohols or alkali metal or ammonium salts thereof such as the products known under the It is an object of this invention to provide a.

and Ocenol being registered trade-marks) [and sulphonated oleyl and cetyl alcohols may be used as the wetting or dispersing agents. Lissapol A. T., Lissapol A., Gardinol C. A. and sulphonated Ocenol are all sulphated higher fatty alcohols, 5 while Igepon T. is an animated higher fatty compound. v 1

The following are examples illustrating preparations produced according to the invention:

' Pounds 10 l. Brenthol A. S. powder 10 Sulphonated Ocenol powder 5 Powdered or finely crystalline sodium metasilicate 35 The ingredients are intimately mixed in a horizontal mixing drum ior-by any other suitable means until a uniform mixture .is produced. The resulting powder is stable and easilysoluble in boiling water.

' Pounds 2. Brenthol M. N. powder- 10 Igepon T. powder 5 Soda ash powder 10 Powdered or finely crystalline sodium metasilicate The mixing is effected as in Example 1. y,

Pounds 3. Brenthol O. T. powder 10 Gardinol C. A. powder 6 Powdered or finely crystalline tri-sodium phosphate 4A 7 v 6.0 The mixing is eilected as in Example 1. v 40 Pounds 4.- Brenthol A. T. (diaceto-acetic toluidide- 10 Sulphonated Ocenol powderln 5 Powdered or finely crystalline sodium metasilicate 40 55 The mixing is efiected as in Example 1.

Pounds 5. Brenthol C. T 10 Soap powder 5 Powdered or finely crystalline sodium metasilicate 35 The mixing is effected as in Example 1.

Pounds powdered wetting agent, a normally water-in- 6. Brenthol C. T 10 soluble dyestufi unreacted with alkali selected Igepon T. powder 1 from the group consisting of arylamides of B- Soap powder 2 hydroxy naphthoic acids and aceto-acetic 5 Powdered or finely crystalline sodium arylides, and an alkaline reacting salt capable of metasilicate 37 solubilizing Said dyestufi when the composition is admixed with water, said constituents being so 50 proportioned that upon addition of the composi- The mixing is effected as in Example 1.

tion to water, the water-insoluble dyestuff dissolves.

2. The composition set forth in claim 1 in which the alkaline reacting salt is trisodium phosphate.

ARTHUR ERNEST EVEREST. JAMES ARTHUR WALLWORK. 

